Cessna 310R accident near Smyrna, TN

On March 11, 2011, a Cessna 310R (airplane) was involved in an accident near Smyrna, TN. 1 person died. Damage to the aircraft: substantial.

Date
March 11, 2011
Place
Smyrna, TN
Aircraft
Cessna 310R · Airplane
Injuries
1 fatal, 0 serious, 0 minor
Damage
Substantial
Position
35.942°N, 86.521°W
NTSB ID
20110311X65739

Official records · ERA11FA185

NTSB summary

HISTORY OF FLIGHT On March 11, 2011, about 1343 central standard time, a Cessna 310R, N310JR, was substantially damaged during a collision with flat terrain following an uncontrolled descent after takeoff from Symrna/Rutherford County Airport (MQY), Symrna, Tennessee. The certificated commercial pilot was fatally injured. Visual meteorological conditions prevailed and no flight plan was filed for the test flight which was conducted under the provisions of 14 Code of Federal Regulations Part 91. A review of radar data provided by the Federal Aviation Administration (FAA) revealed that the radar target identified as the accident airplane was tracked for about two minutes of flight. The airplane departed MQY on a southerly heading and climbed to an altitude of 3,200 feet mean sea level (msl). The radar track showed two targets at 3,200 feet, a target at 3,100 feet, and then a target displayed at 2,700 feet. After that, no further targets were displayed. The targets were displayed at 6-second intervals, and the last few targets were almost directly over the crash site. Several witnesses provided written statements, and all described a nose-down, vertical descent to ground contact. Witnesses described the engine sound as "Full throttle," "wide open," "really loud," and "never let up on [the] throttle." Others said the engine was "puttering" or "quit" before the descent. One said he thought the airplane was a "meteorite." According to the airplane's owner, the flight was one in a series of maintenance acceptance flights after the installation of a new avionics suite and a new aut

Probable cause

The pilot's improper response to a known autopilot pitch divergence anomaly. Contributing to the accident was the pilot's decision to perform a test flight on a system for which he lacked a complete working knowledge.

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